tldraw/lib/shape-utils/rectangle.tsx
2021-05-26 11:34:10 +01:00

168 lines
3.6 KiB
TypeScript

import { v4 as uuid } from "uuid"
import * as vec from "utils/vec"
import { RectangleShape, ShapeType } from "types"
import { registerShapeUtils } from "./index"
import { boundsCollidePolygon, boundsContainPolygon } from "utils/bounds"
import {
getBoundsFromPoints,
getRotatedCorners,
translateBounds,
} from "utils/utils"
const rectangle = registerShapeUtils<RectangleShape>({
boundsCache: new WeakMap([]),
create(props) {
return {
id: uuid(),
type: ShapeType.Rectangle,
isGenerated: false,
name: "Rectangle",
parentId: "page0",
childIndex: 0,
point: [0, 0],
size: [1, 1],
radius: 2,
rotation: 0,
style: {
fill: "#c6cacb",
stroke: "#000",
},
...props,
}
},
render({ id, size, radius, childIndex }) {
return (
<g id={id}>
<rect
id={id}
width={size[0]}
height={size[1]}
rx={radius}
ry={radius}
/>
<text
y={4}
x={4}
fontSize={18}
fill="black"
stroke="none"
alignmentBaseline="text-before-edge"
pointerEvents="none"
>
{childIndex}
</text>
</g>
)
},
applyStyles(shape, style) {
Object.assign(shape.style, style)
return this
},
getBounds(shape) {
if (!this.boundsCache.has(shape)) {
const [width, height] = shape.size
const bounds = {
minX: 0,
maxX: width,
minY: 0,
maxY: height,
width,
height,
}
this.boundsCache.set(shape, bounds)
}
return translateBounds(this.boundsCache.get(shape), shape.point)
},
getRotatedBounds(shape) {
return getBoundsFromPoints(
getRotatedCorners(this.getBounds(shape), shape.rotation)
)
},
getCenter(shape) {
const bounds = this.getRotatedBounds(shape)
return [bounds.minX + bounds.width / 2, bounds.minY + bounds.height / 2]
},
hitTest(shape) {
return true
},
hitTestBounds(shape, brushBounds) {
const rotatedCorners = getRotatedCorners(
this.getBounds(shape),
shape.rotation
)
return (
boundsContainPolygon(brushBounds, rotatedCorners) ||
boundsCollidePolygon(brushBounds, rotatedCorners)
)
},
rotateTo(shape, rotation) {
shape.rotation = rotation
return this
},
translateTo(shape, point) {
shape.point = point
return this
},
transform(shape, bounds, { initialShape, transformOrigin, scaleX, scaleY }) {
if (shape.rotation === 0) {
shape.size = [bounds.width, bounds.height]
shape.point = [bounds.minX, bounds.minY]
} else {
shape.size = vec.mul(
initialShape.size,
Math.min(Math.abs(scaleX), Math.abs(scaleY))
)
shape.point = [
bounds.minX +
(bounds.width - shape.size[0]) *
(scaleX < 0 ? 1 - transformOrigin[0] : transformOrigin[0]),
bounds.minY +
(bounds.height - shape.size[1]) *
(scaleY < 0 ? 1 - transformOrigin[1] : transformOrigin[1]),
]
shape.rotation =
(scaleX < 0 && scaleY >= 0) || (scaleY < 0 && scaleX >= 0)
? -initialShape.rotation
: initialShape.rotation
}
return this
},
transformSingle(shape, bounds) {
shape.size = [bounds.width, bounds.height]
shape.point = [bounds.minX, bounds.minY]
return this
},
setParent(shape, parentId) {
shape.parentId = parentId
return this
},
setChildIndex(shape, childIndex) {
shape.childIndex = childIndex
return this
},
canTransform: true,
canChangeAspectRatio: true,
})
export default rectangle